Dr. Ryan Felling

Dr. Sun is an expert in both pediatric neurology and cerebrovascular neurology, with a special interest in pediatric and young adult stroke. She focuses on both acute care of stroke as well as longitudinal management of an array of neurologic conditions that affect children and young adults. Dr. Sun’s research focuses broadly on pediatric and young adult stroke, with emphasis on discovering the causes, treatments, and prevention of stroke in the young. More specifically, Dr. Sun is investigating novel monitoring and stroke prevention techniques in children with moyamoya disease, which is a rare disease that places affected children and young adults at high risk of stroke. The goal of Dr. Sun's research is to improve outcomes and quality of life of individuals affected by stroke and moyamoya disease. In addition to her clinical and research interests, Dr. Sun is the associate program director of the Child Neurology residency program at Johns Hopkins. After completing medical school at the Johns Hopkins University School of Medicine, Dr. Sun completed her pediatrics and neurology residency training at Johns Hopkins, and subsequently she completed a fellowship in Vascular Neurology/Stroke. Dr. Sun is rated as an Advanced provider by MediFind in the treatment of Moyamoya Disease. Her top areas of expertise are Moyamoya Disease, Stroke, Stiff Person Syndrome, Thrombectomy, and Cerebral Artery Bypass Surgery.

Saqib Chaudhry is a Neurologist in Alexandria, Virginia. Dr. Chaudhry is rated as a Distinguished provider by MediFind in the treatment of Moyamoya Disease. His top areas of expertise are Stroke, Brain Aneurysm, Subarachnoid Hemorrhage, Stent Placement, and Carotid Artery Surgery. Dr. Chaudhry is currently accepting new patients.

Dr. Elisabeth Marsh's clinical interest is in cerebrovascular neurology, and her clinical research focuses on stroke outcomes and recovery. Her clinical responsibilities include attending on the inpatient Stroke Service at the Johns Hopkins Hospital and inpatient Neurology Service at the Johns Hopkins Bayview Medical Center. In 2014, Dr. Marsh was named the Medical Director of the Comprehensive Stroke Program at the Johns Hopkins Bayview Medical Center. She implemented the Bayview Stroke Intervention Clinic (BaSIC), a multi-disciplinary follow-up clinic designed to promote patient follow-up, reduce hospital readmission rates, and enhance post-stroke recovery. Her current focus is on the under-reported neurologic deficits (particularly with respect to depression, fatigue, and cognition) that significantly impair long-term functional outcome and patient satisfaction, despite scores on metrics such as the NIH stroke scale that indicate a “good recovery”. She leads a team of vascular neurologists, emergency medicine physicians, neurosurgeons, interventional neuroradiologists, neurointensivists, and rehabilitation specialists, who work together to provide the highest level of care to all stroke patients, resulting in better functional outcomes and improved quality of life. She is also interested in the treatment of acute stroke and intracranial hemorrhage. Her past work has included evaluation of the predictors of hemorrhagic transformation following ischemic stroke. Using multivariable regression, she created a model that predicts rate of hemorrhagic transformation in patients with acute stroke on anticoagulation, the Hemorrhage Risk Stratification (HeRS) score. The tool is available for free through Apple by searching 'Johns Hopkins HeRS score' in the App Store. Dr. Marsh is rated as a Distinguished provider by MediFind in the treatment of Moyamoya Disease. Her top areas of expertise are Stroke, Apoplexy, Transient Ischemic Attack (TIA), Thrombectomy, and Gastrostomy.